Envelop-machine.



w. H. COOK. ENVELOP MACHINE.

APPLICATION FILED FEB. 6. 1914.

Patented June 8, 1915.

THE NDRRJS PETERS CO., PHOTO-LITHO., WASHINGTON. D. C.

WILLIAM H. COOK, '0F INDIANAOLIS, INDIANA.

ENVELGP-MACHINE.

Specification of Letters Patent.

Patented June 8, 1915.

Application led February 6, 1914. Serial No.V 816,891.

T all whom t may concern Be it known that I, WILLIAM H. COOK, a

l citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Envelop-Machine, of which the following is a specification.

The object of my invention is to produce an improvement in a common form of envelop machine by means of which the completed envelopsY may be accurately discharged from the forming mechanism, said ejecting mechanismv being reduced in its parts to a minimum number of readily ac-V cessible and maintainable members.

The accompanying drawing, which is a vertical section, illustrates Inyinvention.

in the drawing, 10 indicates the forming box to which the previously cut blank is delivered'by the delivery hook 11. Coperating with the forming box 10 is the plunger 12 beneath which the blank is delivered and which serves to drive the blank into the forming box 10, as indicated by the dotted lines 13, which dotted lines show the plunger and envelop blank in an intermediate position ypassing toward the forming table 15 which is arranged at the lower end of box 10. The table 15 is pivoted at 16 and is controlled in its movement about pivotvl by a pitman 17 which leads to a controlling cam of common form. Coperating with the table 15 are flap folders 17, 18 and 19 which are grouped around the box 10 and operated in the usual manner to fold the flaps of the envelop blank down upon the main body,the folders 17 and 19 coming down squarely upon the table 15 so as to seal the adjacent flaps, and the folder 18 also coming down squarely so as toproduce a sharp fold in forming the inlet ap, but a sealing of this entry flap is prevented both by the shortness of the fiap folder 18 and also by means of a draw-off finger 20 which is projected in front and beneath the gummed edge of the entry flap. The various elements thus farv described are in commonuse in envelop machinery and are therefore shown only in a fragmentary way in the drawings. The table 15 is provided near its rear edge with one or more slots 22 which extend through the table and these grooves 22 extend to but not through the rear edge of the table so that an ejector finger 23, one of which is provided for each groove 22, may, when the table 15 is swung 'downwardly about pivot 16, to the position indicated in dotted lines, project through the groove 22 at first beyond the rear edge of the envelop so as to thus come up behind the completed envelop which lies upon the table. The ejector finger 23 is slightly hooked at kits free end, as shown, and is carried upon a bracket 25 which is vertically adjustable by means of a clamping screw 26-upon a bracket 27 carried by the main frame of the machine, said bracket 27 lbeing horizontally adjustable by means of a clamping screw 28.` The ejector f finger 23 is pivoted at 29 upon bracket 25 and is normally held in the position shown in full linesby the spring 30. Carried by the ejector finger 23 is a cam 31, the normal position of which is determined by the adjustable stop 32 carried by bracket 25 and this cam 3l is so formed as to be operated upon by a finger 33 which is carried by the table 15. A i

Y By proper adjustment of theV two brackets 27 and 25 the pivotal point 29 of the ejector finger 23 may be brought accurately to such vposition as is necessary and desirable for proper operation'of the ejector finger and normally this ejector linger lies with its npper hooked end below the working surface of the table 15 and in the lower rear end of the L-shaped slot 22. As soon as the envelop has been completed, the fiap folders 17,18 and 19 are withdrawn and table 15 is moved downwardly toward the position indicated in dotted lines, the finger 2O following the table and, as its lower end projects beneath the entry flap of the envelop, the envelop is rslid forwardly (to the left in the drawing) upon the table after the upper forward edge of the table has passed below the adjacent stationary partsof the machine, and at this time the finger 33, which is carried by the table 15, comes into engagement with the cam 31 and swings the ejector finger 23 upon itspivot 29 so as to positively eject the completed envelop from the table 15 beneath the stationary supporting table 35. In the actual machine this ejection takes place toward and to an envelop carrier in which the envelop is held until the gum upon the entry flap is properly dried, but as that mechanism forms no part of my present invention, it

has been omitted fromthe drawings.

It has heretofore been common practice ioo v*the front face of the'envelop into each slot and produced a quite noticeable creaseinthe 'lower edge ofthe finished envelop.-

'lt will he'noticed that, in my present coni struction, the slotsv 22 are stopped short ol.I the rear edge ofthe forming table and con; sequently, When the folding flap -17 is brought dovvnupon the envelop :there isa c continuous surface beneath it Where'the fold isA formed and there is noi-creasingV of the Y front face of thel envelop into its slots 22.

I claim as my invention.: n l. ln an' envelop machine, the combina,-

face near itsV rear edge, of a sivingingejector linger' arranged to cooperate With said Work Ytable through thev slot thereof, la cam vcarried by said ejector vrlinger, a cam operating finger carried by the Work table and vcoperatingvvith said finger cam to drive said linger through its ejecting motion Whenthe n, i j

slot through its Worlnfng, face, arock shaft f Work table is moved through kits envelop` delivering movement, and draw-oli means coordinatedl Wirth. the Worlr table and ejector linger for. engaging; the envelop upon the {ftablevwhen the .table moves in discharging direction Yto 'advance said envelop to Vuncover the rear end ofthe Work tablenslot prior to the'projection of the ejector finger above the Working face of the Work table.

2. In an envelop machine, the combination ,cfa forming table and folding-flaps coperating With the edges thereof, said table having a slotformed therethrough for an,ejector `linger but stoppingshort'of the f adjacent folding iiapsoVv as to leave'a conthe Work tabl tinuous table edge immediatclybenfeath vthe said iiap, an ejector finger,means for opmoves in discharging direction to advance said Aenvelopfto uncover the rear end lof the Work .table :slot prior toy the projection of the ejector finger above'the Workingiface loi 8. In an envelop machine, the combina- .tion With coordinatedv folding members for folding the envelop, of a swingingV Work @wie if this. @www be over@ n? #mais een; by. @erasing es ,Cimiessnefr-einem 1 table with vWhich saidfoldingmembers are 'coordinated for the folding operation, said swinging table having a'iiXed Vpivot and a slot through its Working face falling short of the edges of the'table, an ejectory finger Y arranged below the table in positionl to be 4projected through and'alongsaid slot by the swinging action .of the Work table away' from "the folding members, and draw-off means coordinated with the vvvoi'l table and ejector finger for engaging the envelop upon thetable when the table moves in discharging Adirection to advance saidlenvelop slot prior to the V'projectionof the ejector toi uncoverV the rear lend of. the. vvorlr table A finger above the Working V.face ofl the Work Y table. Y Y Y v A il. yIn an envelop machine, the combination with Vc ordinated folding members for folding the envelop,' of a swinging Work Y`table with whichV said folding members are Coordinated for the foldingA operation, said swingingtable havingla fixed axis and a arranged belon7 the table vsubstantially parallelwith the axisgthereof, an ejector finger j A carried by said rock shaft in' aline-ment With Ythe planeV of movement'otftlie Work table slot and normally lying beneath the WorkV so Y ,a

table'Y surface, Y, interengaging members carri'edVv by saidivorlr table. and'said,ejectorY finger whereby the inalsWinging movement 8,5 the ejector finger lengthwise of the Work Y of the Work table will produce movement of table slokt subseoiuenlt' tothe projection of l the end of said yejector',finger abovefthe Work table surfacegand draai-ofi means `co ordinatedwith the Work jtable and ejector iiiigerfor, engaging 'the envelop upon theV table When the-'table'movesfin discharging n' direction to" advance 7said envelop tol uncover the rear end'off the Work table slot prior'tothe projection of the ejectorriinger above the-Working face of the Work table.

.E1n ivitness vvhereoi,- I havehereunto'set Ymy hand at indianapolis, Indiana', this Lithl day of February, A; D, one vthousand nine Wagiiingtop, c. 

